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Finding the Fourth Proportional to 21,657.92, 32,488.04 and 6,867.96

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Solution

The fourth proportional to 21,657.92, 32,488.04 and 6,867.96 is: 10,302.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.92 : 32,488.04 = 6,867.96 : x
  2. Step 2: Convert to fraction form
    21,657.92/32,488.04 = 6,867.96/x
  3. Step 3: Cross multiply
    21,657.92x = 32,488.04 × 6,867.96
  4. Step 4: Simplify right side
    21,657.92x = 223,126,559.20
  5. Step 5: Solve for x
    x = 223,126,559.20/21,657.92
  6. Step 6: Final answer
    x = 10,302.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.